The first device A therapeutic respiratory device of the SleepCube AutoBiLevel type from DeVilbiss Healthcare, often used to treat sleep apnea. Here are the most important specifications: 🔧 Basic Specifications • Type: Automatic BiLevel (dual pressure) device • Function: Provides two different air pressures: • Higher pressure during inhalation (IPAP) • Lower pressure during exhalation (EPAP) • Pressure range: Usually from 3 to 25 cm water (cmH2O)